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W. HlBY.

CONSTRUCTION OF COKE OVENS FOR THE ALTERNATE HEATING WITH STRONG 0R LEAN GAS. APPLICATION FILED JULY 13, I920.

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CONSTRUCTION OF COKE OVENS FOR THE ALTERNATE HEATING WITH STRONG 0R LEAN GAS.

APPLICATION FILED JULY 13. I920.

Patented; Nov. 21, I922.

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WALTHER HIBY, 0F NOORDWIJ'K AAN ZEE, NETHERLANDS, ASSIGNOR TO J'OHAN CHRISTIAAN BAR-ON VAN HAERSOLTE VAN HAERST, OF DRIEBERGEN, NETH- ERLANDS.

CONSTRUCTION OF COKE OVENS FOR THE ALTERNATE HEATING WITH STRONG 0R LEAN GAS.

Application filed July 13, 1920. Serial No. 396,007.

To all whom it may concern:

Be it known that I, WALTHER HIBY, a subject of the German Republic, residing at Noordwijk aan Zee, Netherlands, have invented certain new and useful Improve? ments in the Construction of Coke Ovens for the Alternate Heating with Strong or Lean Gas (for which I have filed applications in Germany May 14, 1916, and in England July 7, 1920, No. 19,309, and in Holland July 31, 1920, No. 15,897, and in France July 8, 1920, No. 130,476, and in Belgium July 9, 1920, No. 21,786), of which the following is a specification.

The present invention refers to such cokeovens, which are to be heated alternately with their own gas, designated as strong gas, or with a gas from another source, such as producer gas or blast furnace gas, designated as lean gas. is known, to preheat the air for combustion in regenerators and the lean gas in recuperators. The invention presents a new and useful solution of this problem and 'olfers considerable advantages over known constructions, it is represented in the annexed drawing in different sections by Figures 1, 2 and 3.

Fig. 1 is a vertical sectional view of the coke oven, one section being taken on the line AB and the other on the line C--D of Fig. 3. 7

Fig. 2 is a horizontal section taken on the lines G-H, I- -K and L-M of Fig. 3;

Fig. 3 is a vertical transversesection taken j on the line E-F of Fig. 1.

. simplify the operation in Fig. 4 is a detail view illustrating a por- 1 tion of the heating flues together with the air and gas'preheatei's located beneath the flues.

The horizontal oven-chambers 1 are separated by the heating-walls 2. The heating of the new oven is arranged in such a manner, that alternately the heating flues 3 are heated directlywhile the waste-gases pass through the flues 4 or the flues 4 are heated directly and the flues 3. To each'pair of heating flues 3 and 4 belong two re-generator'chambers 5 and 6 and two recuperator-chambers 7 and 8. To. the alternate heat-v ing' of the oven with strong or lean gas it is assumed, that in both cases the heating gas In ovens of this kind it waste-gases travel through go through the same system of is preheated in the recuperators; for this purpose the gas-distributing pipes 9 and 10 "and the burner-pipes 11 and'12 have to be made large enough to suflice for the supply of the lean gas. The introduction of the air to the regenerator-chambers 5 and 6 is effected through sole-flues 13 and 14, which in the present construction stretch under the full length of the heating-walls. The op-' lowing way: (the numbers in parentheses indicate the way after reversing.) The heating flues 3' (4) receive heating gas from burners 11 (12), whichis preheated inthe recuperator-chambers 7 (8). The gas from the recuperators 7 (8) enters the flues 3 (4) thru the ports 7 (8 The. air for combustion enters thru valves 130 (140) and'is distributed through sole flues 13 (14) and is preheated in the regenerator-chambers 5 (6). The preheated air discharges into the flues 3 (4) thru openings 5 (6 The preheated gases from chambers 7 (8) and the preheated air from chambers-5' (6) meet at the height of the floor of the oven and the combustion takes place in upward direction .in the heating flues 3 (4). The waste-gases eration of the oven is carried out in the folthe strong and the lean gas are led through gas-distributing pipes 9 and 10; therefore these pipes have to be large enough to conduct the greater quantities of the lean gas. The introduction of the greater quantities of lean gas, when changing from heating with strong gas, can be effected either by increased pressure or by enlarging the openings of the cooks in burner-pipes 11 and 12. In the present invention, as has been described, both the strong and the lean gas recuperatorchambers and the result is a very simple mode of operation.

The recuperator-chambers may be constructed as long rectangular or otherwise shaped slits as indicated in Figs. 3 and 4 or they maybe built up of specially shaped bricks with holes.

By arranging the regenerator and recuperator-chambers side by side between the floors of the ovens and the arches of the sub-structure a very simple and clear working of the oven is rendered possible, because all the parts for regulation and reversing lie very close together. In consequence of the fact, that each burner has its separate regenerator and recuperator-chamber, the regulation of air and gas in the length of the oven wall can be made in the most exact way; the regulation of the air is preferably efl'ected at the upper end of the heating flues, through openings 0 as shown on the draw- Fhe present invention may also be applied to such coke-ovens, in which the heating gases ascend in the one half of the oven wall and descend in the other half.

Having now described my invention, what I claim as new in subheated coke-ovens for the alternate heating with strong or lean gas is;. y

1, In a horizontal coke oven with vertical heating flues, said oven being raised and provided with subways underneath the oven to permit access to and operation of the regulating devices, the combination with .said vertical flues, of a burner for each flue, a separate regenerator chamber corresponding to each single burner for the preheating of the air and a separate recuperator chamber for preheating the heating gas supplied to said burner, both chambers lying between the soles of the ovens and the ceilings of the subways.

2. In a horizontal coke oven with heating walls provided with vertical heating flues, said oven being raised and provided with subways underneath the oven to permit access to and operation of the regulating devices, the vertical flues in each heating wall comprising a system of alternate flues, arranged in pairs, so that'one flue of each pair may be heated directly while the other flue is supplied with the waste gases, the flues of each pair communicating at their tops, of

a pair of regenerator chambers 'for each.

pair of flues for alternately preheating the air, a pair of recuperator chambers for each pair of flues Jfor alternately preheating the gas, said regenerator chambers and recuperator chambers being located between the ceiling of the subways and the floors of the oven chambers and means for reversing the direction of the flow of the heating gases thru the flues and preheaters so that first the heating gas and air pass upwardly thru the first set of preheaters and the odd flues and are discharged thru the even flues and the corresponding regenerator chambers, and then during the reverse operation the heating gases and air flow thru the second set of preheaters, and then pass thru the even flues and are discharged into the odd heating flues on their way to the first set of preheaters out to the chimney.

3. In a horizontal coke oven with vertical heating flues, said oven being raised and provided with subways underneath the oven to permit access to and operation of the regulating devices, the vertical flues in each heating wall comprising a system of alternate flues, arranged in pairs, so that one flue of each pair may be heated directly while the other flue is supplied with the waste gases from the first flue, of a pair of regenerator chambers for each pair of flues for preheating the air, one of each pair of regenerators being connected to the odd numbered flues and the other one of the pair of regenerators being connected to the even numbered flues,-a pair of recuperator chambers for each pair of flues for preheating the gas, said regenerator chambers and recuperator chambers being located between the ceiling of the subways and the floors of the oven chambers and means for reversing the direction of the flow of the heating gases thru the flues and preheaters, each pair of vertical heating flues being separated from the adjacent pair, the air preheating regenerators lying under the oven chambers and the gas preheating recuperators lying underthe heating flues.

4. In a horizontal coke oven with vertical heating flues, said oven being'raised and provided with subways underneath the oven to permit access to and operation of the regulating devices, the vertical flues in each heating wall comprising a system of alternate flues, arranged in pairs, so that one flue of each pair may be heated directly while the other flue is supplied with the waste gases from the first flue, of a pair of regenerator chambers for each pair of flues for preheating) the air, one of each pair of regenerators eing connected to the odd numbered flues and the other one of the pair of regenerators being connected to the even numbered flues, a pa r of recuperator chambers for each pair of flues for preheating the gas, said regenerator chambers and recuperator chambers being located between the ceiling of the subways and the floors of the oven chambers and means for reversing the direction of the flow of the heating gases through the flues and preheaters, each pair of vertical heating flues being separated from the adjacent pair, the air preheating regenerators lying under the oven chambers and the gas preheating recuperators lying under the heating flues, a sole flue foreach set of regenerator chambers, said sole flues lying beneath the regenerators and above the ceilings of the subways and two main chimney fiues, one at each end of the oven, communicating with their respective sole lines.

5. In a horizontal coke oven with vertical heating fiues, said oven being raised and provided with subways underneath the oven to permit access to and operation of the regulating devices the vertical flues. in each heating wall comprising a system of alternate fiues, arranged in pairs, so that one flue of each pair may be heated directly while the other flue is supplied with the waste gases from the first flue, of a pair of regenerator chambers for each pair of fines for preheating the air, one of each pair of regenerators being connected to the odd numbered flues and the other one of the pair of regenerators being connected to the even'numbered fiues, a pair of recuperator chambers for each pair of fines for preheating the gas, said regenerator chambers and recuperator chambers being located between the ceiling of the subways and the floors of the oven chambers and means for reversing the direction of the flow of the heating gases through the fiues and preheaters, each pair of vertical heating fiues being separated from the adjacent pair, the air preheating regenerators lying under the oven chambers and the gas preheating recuperators lying under the heating flues, the recuperator chambers for heating the gases lying between the regenerators which latter lie under adjacent oven chambers so that the recuperators receive their heat from the said regenerators. r

belng connected to the odd numberedlluesv and the other one of the pair of regenerators being connected to the even numbered fines, a pair of recuperator chambers for each pair of fiues for preheating the gas, said regenerator chambers and recuperator chambers being located between the ceiling of the subways and the floors of the oven chambers, and means for reversing the direction of the flow of the heating gases through the fiues and preheaters, each pair of vertical heating fiues being separated from the ad- "jacent pair, the air preheating regenerators lying under the oven chambers and the gas preheating recuperators lying under the heating fiues, there being two regenerators underneath each oven chamber, said regenerators being arranged side by side transversely of the oven chambers and a gas recuperator being arranged between adjacent regenerators.

In testimony whereof I afix m signature.

W ALTHEfi HIBY. 

